Short and broadband silicon asymmetric Y-junction two-mode (de)multiplexer using fast quasiadiabatic dynamics

Hung Ching Chung, Kun Sheng Lee, Shuo Yen Tseng

Research output: Contribution to journalArticlepeer-review

32 Citations (Scopus)

Abstract

A short and broadband silicon asymmetric Y-junction two-mode (de)multiplexer is proposed and simulated. An adiabaticity parameter suitable for high index-contrast silicon waveguides is defined. The fast quasiadiabatic dynamics protocol is used to homogeneously distribute adiabaticity over the device length. This protocol limits the power coupled into the unwanted waveguide eigenmode under a fixed value along the propagation. A 16 μm long mode (de)multiplexer with crosstalk < -34 dB is obtained. Simulations show that the optical bandwidth is as large as 300 nm (1400 nm ~ 1700 nm). The design is also fabrication tolerant.

Original languageEnglish
Pages (from-to)13626-13634
Number of pages9
JournalOptics Express
Volume25
Issue number12
DOIs
Publication statusPublished - 2017 Jun 12

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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